diff --git a/addons/web/static/src/js/chrome/abstract_web_client.js b/addons/web/static/src/js/chrome/abstract_web_client.js
index 2d94501deed..cd1109a98ce 100644
--- a/addons/web/static/src/js/chrome/abstract_web_client.js
+++ b/addons/web/static/src/js/chrome/abstract_web_client.js
@@ -396,7 +396,8 @@ var AbstractWebClient = Widget.extend(ServiceProviderMixin, KeyboardNavigationMi
                 title: data.title,
             }, data).open();
         } else {
-            this.call('notification', 'notify', e.data);
+            data.type = 'warning';
+            this.call('notification', 'notify', data);
         }
     },
     /**
diff --git a/addons/web/static/src/js/views/basic/basic_model.js b/addons/web/static/src/js/views/basic/basic_model.js
index de915c82152..00a1be6c228 100644
--- a/addons/web/static/src/js/views/basic/basic_model.js
+++ b/addons/web/static/src/js/views/basic/basic_model.js
@@ -4059,11 +4059,7 @@ var BasicModel = AbstractModel.extend({
                     return;
                 }
                 if (result.warning) {
-                    self.trigger_up('warning', {
-                        message: result.warning.message,
-                        title: result.warning.title,
-                        type: 'dialog',
-                    });
+                    self.trigger_up('warning', result.warning);
                     record._warning = true;
                 }
                 if (result.domain) {
diff --git a/addons/web/static/tests/views/form_tests.js b/addons/web/static/tests/views/form_tests.js
index bc47d849258..4370f4034e0 100644
--- a/addons/web/static/tests/views/form_tests.js
+++ b/addons/web/static/tests/views/form_tests.js
@@ -3026,7 +3026,8 @@ QUnit.module('Views', {
                         value: { int_field: 10 },
                         warning: {
                             title: "Warning",
-                            message: "You must first select a partner"
+                            message: "You must first select a partner",
+                            type: 'dialog',
                         }
                     });
                 }
@@ -3055,6 +3056,55 @@ QUnit.module('Views', {
         form.destroy();
     });
 
+    QUnit.test('display a notificaton if onchange result is a warning with type notification', async function (assert) {
+        assert.expect(5);
+
+        this.data.partner.onchanges = { foo: true };
+
+        var form = await createView({
+            View: FormView,
+            model: 'partner',
+            data: this.data,
+            arch: '<form string="Partners">' +
+                    '<group><field name="foo"/><field name="int_field"/></group>' +
+                '</form>',
+            res_id: 2,
+            mockRPC: function (route, args) {
+                if (args.method === 'onchange') {
+                    return Promise.resolve({
+                        value: { int_field: 10 },
+                        warning: {
+                            title: "Warning",
+                            message: "You must first select a partner",
+                            type: 'notification',
+                        }
+                    });
+                }
+                return this._super.apply(this, arguments);
+            },
+            intercepts: {
+                warning: function (event) {
+                    assert.strictEqual(event.data.type, 'notification',
+                        "should have triggered an event with the correct data");
+                    assert.strictEqual(event.data.title, "Warning",
+                        "should have triggered an event with the correct data");
+                    assert.strictEqual(event.data.message, "You must first select a partner",
+                        "should have triggered an event with the correct data");
+                },
+            },
+        });
+
+        await testUtils.form.clickEdit(form);
+
+        assert.strictEqual(form.$('input[name=int_field]').val(), '9');
+
+        await testUtils.fields.editInput(form.$('input[name=foo]'), 'tralala');
+
+        assert.strictEqual(form.$('input[name=int_field]').val(), '10');
+
+        form.destroy();
+    });
+
     QUnit.test('can create record even if onchange returns a warning', async function (assert) {
         assert.expect(2);
 
@@ -3114,7 +3164,7 @@ QUnit.module('Views', {
                         value: {},
                         warning: {
                             title: "Warning",
-                            message: "You must first select a partner"
+                            message: "You must first select a partner",
                         }
                     });
                 }
diff --git a/odoo/api.py b/odoo/api.py
index 87534567cfe..f4eeae44516 100644
--- a/odoo/api.py
+++ b/odoo/api.py
@@ -170,8 +170,10 @@ def onchange(*args):
 
             return {
                 'domain': {'other_id': [('partner_id', '=', partner_id)]},
-                'warning': {'title': "Warning", 'message': "What is this?"},
+                'warning': {'title': "Warning", 'message': "What is this?", 'type': 'notification'},
             }
+            If the type is set to notification, the warning will be displayed in a notification.
+            Otherwise it will be displayed in a dialog as default.
 
 
         .. warning::
diff --git a/odoo/models.py b/odoo/models.py
index 07b2fd7a341..2c4ad698b27 100644
--- a/odoo/models.py
+++ b/odoo/models.py
@@ -5388,6 +5388,7 @@ Fields:
                 result['warnings'].add((
                     res['warning'].get('title') or _("Warning"),
                     res['warning'].get('message') or "",
+                    res['warning'].get('type') or "",
                 ))
 
         if onchange in ("1", "true"):
@@ -5611,13 +5612,15 @@ Fields:
         # format warnings
         warnings = result.pop('warnings')
         if len(warnings) == 1:
-            title, message = warnings.pop()
-            result['warning'] = dict(title=title, message=message)
+            title, message, type = warnings.pop()
+            if not type:
+                type = 'dialog'
+            result['warning'] = dict(title=title, message=message, type=type)
         elif len(warnings) > 1:
             # concatenate warning titles and messages
             title = _("Warnings")
-            message = "\n\n".join(itertools.chain(*warnings))
-            result['warning'] = dict(title=title, message=message)
+            message = '\n\n'.join([warn_title + '\n\n' + warn_message for warn_title, warn_message, warn_type in warnings])
+            result['warning'] = dict(title=title, message=message, type='dialog')
 
         return result